Strava/garmin accuracy

My Strava predicts 4:47:00 and Garmin 4:45;00 and ChatGPT 5:05:00

I kind of want to follow the 4:45:00 pacers

My half marathon 4 weeks ago was 2:08:00

My 10 mile also 4 weeks ago was 1:30:00

I am afraid of blowing up though. And this is my first marathon.

Do you recommend following the 4:45:00 pacers? Or what do you guys recommend?